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High RLSA-2026:77690 16 CVEs

Important: kernel security, bug fix, and enhancement update

Published Oct 9, 2026 · Updated Oct 9, 2026

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: ipvlan: Make the addrs_lock be per port (CVE-2026-23103)

* kernel: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use (CVE-2026-53360)

* kernel: vsock/virtio: fix zerocopy completion for multi-skb sends (CVE-2026-53365)

* kernel: NFSD: Fix SECINFO_NO_NAME decode error cleanup (CVE-2026-53398)

* kernel: vsock/virtio: bind uarg before filling zerocopy skb (CVE-2026-63970)

* kernel: igc: set tx buffer type for SMD frames (CVE-2026-64035)

* kernel: vsock/vmci: fix UAF when peer resets connection during handshake (CVE-2026-64115)

* kernel: SUNRPC: pin upper rpc_clnt across the TLS connect_worker (CVE-2026-72317)

* kernel: udp: fix potential use-after-free in tunnel segmentation (CVE-2026-74705)

* kernel: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev (CVE-2026-74744)

* kernel: nfsd: defer vfree of compound ops to fix rpc_status UAF (CVE-2026-89690)

* kernel: nfsd: initialize copy-notify stateid before publishing it (CVE-2026-89669)

* kernel: svcrdma: Reject inline replies that overflow the pull-up buffer (CVE-2026-89530)

* kernel: nfsd: fix stale s2s_cp_stateids IDR entry for async COPY (CVE-2026-89676)

* kernel: nfsd: revoke copy-notify stateids before dropping their reference (CVE-2026-89663)

* kernel: nfsd: fix UAF in async copy cancel and shutdown (CVE-2026-89675)

Bug Fix(es) and Enhancement(s):

* mlxbf_bootctl: driver update to Linux v6.16 [Nvidia 10.2.z FEAT] (JIRA:Rocky Linux-212709)

* [GNR-D] missing interfaces tspll_cfg [rhel-10.2] (JIRA:Rocky Linux-273805)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 10 kernel 0:6.12.0-211.64.1.el10_2

Vulnerabilities 16

  • Critical 10.0

    udp: fix potential use-after-free in tunnel segmentation

    In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head…

  • Critical 9.8

    NFSD: Fix SECINFO_NO_NAME decode error cleanup

    In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix SECINFO_NO_NAME decode error cleanup nfsd4_decode_secinfo_no_name() currently initializes sin_exp after decoding sin_style. If the XDR stream is truncated, the decoder returns nfser…

  • Critical 9.8

    igc: set tx buffer type for SMD frames

    In the Linux kernel, the following vulnerability has been resolved: igc: set tx buffer type for SMD frames Sashiko pointed out that igc_fpe_init_smd_frame() initializes igc_tx_buffer fields for an SMD skb, but does not set the buffer type: https://sashiko.dev…

  • Critical 9.8

    SUNRPC: pin upper rpc_clnt across the TLS connect_worker

    In the Linux kernel, the following vulnerability has been resolved: SUNRPC: pin upper rpc_clnt across the TLS connect_worker The TLS connect path has a use-after-free: nothing pins the upper rpc_clnt across the delayed connect_worker. xs_connect() stores task…

  • Critical 9.8

    ipvlan: inherit needed_headroom and needed_tailroom from phy_dev

    In the Linux kernel, the following vulnerability has been resolved: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev ipvlan devices inherit hard_header_len from phy_dev during ipvlan_init(), but leave needed_headroom and needed_tailroom set to…

  • Critical 9.8

    svcrdma: Reject inline replies that overflow the pull-up buffer

    In the Linux kernel, the following vulnerability has been resolved: svcrdma: Reject inline replies that overflow the pull-up buffer An RPC-over-RDMA client can request a reply, such as an NFS READ payload, without providing a Write list or a Reply chunk to ca…

  • Critical 9.8

    nfsd: initialize copy-notify stateid before publishing it

    In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize copy-notify stateid before publishing it nfsd4_copy_notify() finished initializing the cpntf state after nfs4_alloc_init_cpntf_state() had already linked it into the s2s_cp_s…

  • Critical 9.8

    nfsd: fix UAF in async copy cancel and shutdown

    In the Linux kernel, the following vulnerability has been resolved: nfsd: fix UAF in async copy cancel and shutdown An async copy could be freed or used after free while a teardown caller (OFFLOAD_CANCEL, nfsd4_shutdown_copy, nfsd4_cancel_copy_by_sb) raced th…

  • Critical 9.8

    nfsd: fix stale s2s_cp_stateids IDR entry for async COPY

    In the Linux kernel, the following vulnerability has been resolved: nfsd: fix stale s2s_cp_stateids IDR entry for async COPY For an async COPY, nfsd4_copy() called nfs4_init_copy_state() before dup_copy_fields(), so the s2s_cp_stateids IDR was pointed at &u->…

  • High 8.8
    CVE-2026-53360 Public exploit

    KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use

    In the Linux kernel, the following vulnerability has been resolved: KVM: SEV: Require in-GHCB scratch area if GHCB v2+ is in use As per the GHCB spec, when using GHCB v2+ require the software scratch area to reside in the GHCB's shared buffer. Note, things li…

  • High 8.8

    vsock/vmci: fix UAF when peer resets connection during handshake

    In the Linux kernel, the following vulnerability has been resolved: vsock/vmci: fix UAF when peer resets connection during handshake vmci_transport_recv_connecting_server() returned err = 0 for a peer RST in its default switch arm: err = pkt->type == VMCI_TRA…

  • High 8.8

    nfsd: revoke copy-notify stateids before dropping their reference

    In the Linux kernel, the following vulnerability has been resolved: nfsd: revoke copy-notify stateids before dropping their reference Copy-notify stateids live in the s2s_cp_stateids IDR and on their parent stid's sc_cp_list, pinned by a single membership ref…

  • High 7.8

    ipvlan: Make the addrs_lock be per port

    In the Linux kernel, the following vulnerability has been resolved: ipvlan: Make the addrs_lock be per port Make the addrs_lock be per port, not per ipvlan dev. Initial code seems to be written in the assumption, that any address change must occur under RTNL.…

  • High 7.8
    CVE-2026-53365 Public exploit

    vsock/virtio: fix zerocopy completion for multi-skb sends

    In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix zerocopy completion for multi-skb sends When a large message is fragmented into multiple skbs, the zerocopy uarg is only allocated and attached to the last skb in the loop. …

  • High 7.8

    vsock/virtio: bind uarg before filling zerocopy skb

    In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: bind uarg before filling zerocopy skb virtio_transport_send_pkt_info() allocates or reuses the zerocopy uarg before entering the send loop, but virtio_transport_alloc_skb() stil…

  • High 7.8

    nfsd: defer vfree of compound ops to fix rpc_status UAF

    In the Linux kernel, the following vulnerability has been resolved: nfsd: defer vfree of compound ops to fix rpc_status UAF The rpc_status netlink dumpit walks every in-flight svc_rqst under rcu_read_lock and, for NFSv4 requests, reads opnums out of args->ops…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2436771
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2497032
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2499742
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502222
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502411
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502476
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502593
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2516705
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2521498
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2524431
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532103
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532111
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532218
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532219
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532231
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2532272
  • advisory
    https://access.redhat.com/errata/RHSA-2026:77690